Deleting from SQL detailsView - asp.net

Question

Hey I am just learning to how to use asp.net and I am trying to use the grid view to display information and details view edit/delete the information from the database. Right now I can edit and update the information in the database but I also want it to delete and something is not working for me. I set up an exception and when I select the item and press delete it pops up my exception that another user has deleted the item when it hasn't. Im not really sure what i have done wrong, to me it looks like it should work.
Here is the code for the delete command and parameters from the details view
DeleteCommand="DELETE FROM [Customers]
WHERE [CustomerID] = #original_CustomerID
AND [Name] = #original_Name
AND [Address] = #original_Address
AND [City] = #original_City
AND [State] = #original_State
AND [ZipCode] = #original_ZipCode
AND ([Phone] = #original_Phone
OR [Phone] IS NULL AND #original_Phone IS NULL)
AND ([Email] = #original_Email
OR [Email] IS NULL AND #original_Email IS NULL)"
<DeleteParameters>
<asp:Parameter Name="original_CustomerID" Type="Int32" />
<asp:Parameter Name="original_Name" Type="String" />
<asp:Parameter Name="original_Address" Type="String" />
<asp:Parameter Name="original_City" Type="String" />
<asp:Parameter Name="original_State" Type="String" />
<asp:Parameter Name="original_ZipCode" Type="String" />
<asp:Parameter Name="original_Phone" Type="String" />
<asp:Parameter Name="original_Email" Type="String" />
</DeleteParameters>
and here is the delete functions in the cs file
protected void DetailsView1_ItemDeleted(object sender, DetailsViewDeletedEventArgs e)
{
if (e.Exception != null)
{
lblError.Text = "A database error has occurred.<br /><br />" +
"Message: " + e.Exception.Message;
e.ExceptionHandled = true;
}
else if (e.AffectedRows == 0)
lblError.Text = "Another user may have deleted that customer."
+ "<br />Please try again.";
else
GridView1.DataBind();
}
protected void DetailsView1_ItemDeleting(
object sender, DetailsViewDeleteEventArgs e)
{
e.Values["Name"]
= e.Values["Name"].ToString().Substring(1);
}

Answer 1

Why do you have such a huge query for a delete statement?Have a look how it's done in the MSDN DetailsView example
The CustomerID in your SQL table should be unique so your delete statement should be as simple as:
DeleteCommand="DELETE FROM [Customers] WHERE [CustomerID] = #original_CustomerID"
And only one delete parameter:
<DeleteParameters>
<asp:Parameter Name="original_CustomerID" Type="Int32" />
</DeleteParameters>
One more thing which is quite important is you need to set DataKeyNames="CustomerID" on the DetailsView so that DetailsView1_ItemDeleted knows which row to delete. Hope this helps!